sensor TOYOTA RAV4 2006 Service Repair Manual

U241E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE ASSEMBLYAX–151
AX
8. INSTALL ENGINE MOUNTING BRACKET RR
(a) Install the mounting bracket with the 3 bolts.
Torque: 45 N*m (459 kgf*cm, 33 ft.*lbf)
9. INSTALL TRANSMISSION OIL COOLER
(a) Install the oil cooler (see page AX-127).
10. CONNECT WIRE HARNESS
(a) Connect the wire harness clamps.
(b) Connect the speed sensor connectors.
(c) Connect the transaxle wire connector.
(d) Connect the park/neutral position switch connector.
11. INSTALL STARTER ASSEMBLY
(a) Install the starter with the 2 bolts.
Torque: 37 N*m (377 kgf*cm, 27 ft.*lbf)
(b) Connect the starter wire with the nut.
Torque: 13 N*m (133 kgf*cm, 10 ft.*lbf)
(c) Connect the starter connector.
(d) Install the terminal nut and cover the nut with the
cap.
Torque: 9.8 N*m (100 kgf*cm, 7 in.*lbf)
12. INSTALL ENGINE ASSEMBLY WITH TRANSAXLE
(a) Install the engine with transaxle (see page EM-105).
13. ADD AUTOMATIC TRANSAXLE FLUID
Fluid type:
Toyota Genuine ATF WS
14. INSPECT AUTOMATIC TRANSAXLE FLUID
(a) Inspect the automatic transaxle fluid (see page AX-
102).
15. PERFORM RESET MEMORY
(a) Perform the RESET MEMORY procedures (A/T
initialization) (see page AX-18).
C129395
C127821
A124921
A124920

AX–166U241E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
AX
5. REMOVE OIL COOLER INLET TUBE UNION
(a) Remove the union.
(b) Remove the O-ring from the union.
6. REMOVE SPEED SENSOR
(a) Remove the 2 bolts and 2 speed sensors from the
transaxle.
(b) Remove the 2 O-rings from the sensors.
7. REMOVE NO. 1 TRANSAXLE CASE PLUG
(a) Remove the 4 plugs from the transaxle.
(b) Remove the 4 O-rings from the 4 plugs.
8. FIX AUTOMATIC TRANSAXLE ASSEMBLY
9. REMOVE AUTOMATIC TRANSAXLE OIL PAN SUB-
ASSEMBLY
(a) Remove the 18 bolts.
(b) Remove the oil pan and 3 magnets.
(c) Remove the gasket from the oil pan.
10. INSPECT AUTOMATIC TRANSAXLE OIL PAN SUB-
ASSEMBLY (See page AX-185)
C127450
D003900E01
C134982
D009176E01
D009177E01

U241E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–167
AX
11. REMOVE VALVE BODY OIL STRAINER ASSEMBLY
(a) Remove the 3 bolts and oil strainer.
(b) Remove the O-ring from the oil strainer.
12. REMOVE TRANSMISSION WIRE
(a) Remove the 5 connectors from the shift solenoid
valves.
(b) Remove the bolt, clamp and ATF temperature
sensor.
(c) Remove the bolt and transaxle solenoid wire from
the transaxle.
(d) Remove the O-ring from the transaxle solenoid wire.
D009179E01
D009180E01
C130917E01
D003547E08
D003636E03

U241E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNITAX–213
AX
56. INSTALL TRANSAXLE CASE 2ND BRAKE GASKET
(a) Coat a new transaxle case 2nd brake gasket with
ATF, and install it to the transaxle.
57. INSTALL NO. 1 GOVERNOR APPLY GASKET
(a) Coat a new governor apply gasket No. 1 with ATF,
and install it to the transaxle.
58. INSTALL TRANSMISSION VALVE BODY ASSEMBLY
(a) Make sure that the manual valve lever position,
install the valve body with the 17 bolts to the
transaxle.
Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf)
HINT:
Each bolt length is indicated below.
Bolt length:
25 mm (0.984 in.) for bolt A
41 mm (1.614 in.) for bolt B
45 mm (1.771 in.) for bolt C
NOTICE:
• Push the valve body against the accumulator
piston spring and the check ball body to
install it.
• When installing the valve body to the
transaxle case, do not hold the solenoids.
• Tighten the bolts marked by * in the
illustration first temporarily because they are
positioning bolts.
(b) Connect the 5 solenoid connectors.
(c) Install the ATF temperature sensor, clamp and bolt.
Torque: 6.6 N*m (67 kgf*cm, 58 in.*lbf)
C083128E01
C083127E01
D003553E09
D025591E01

AX–214U241E AUTOMATIC TRANSAXLE – AUTOMATIC TRANSAXLE UNIT
AX
59. INSTALL VALVE BODY OIL STRAINER ASSEMBLY
(a) Coat a new O-ring with ATF, and install it to the oil
strainer.
(b) Install the oil strainer and 3 bolts to the valve body.
Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf)
60. INSTALL AUTOMATIC TRANSAXLE OIL PAN SUB-
ASSEMBLY
(a) Install the 3 magnets in the oil pan.
(b) Install a new oil pan gasket to the oil pan.
(c) Install the oil pan to the transaxle with the 18 bolts.
Torque: 7.6 N*m (77 kgf*cm, 67 in.*lbf)
NOTICE:
Because the bolts are seal bolts, apply seal
packing to new bolts and tighten them within 10
minutes after application.
61. INSTALL SPEED SENSOR
(a) Coat 2 new O-rings with ATF, and install them to the
2 sensors.
(b) Install the 2 sensors with the 2 bolts to the transaxle.
Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf)
D009180E01
D009179E01
C134981E01
D009176E02
D003900E01

TF–6GF1A TRANSFER – ACTIVE TORQUE CONTROL 4WD SYSTEM
TF
SYSTEM DESCRIPTION
1. GENERAL DESCRIPTION
(a) The active torque control 4WD system detects the
driving conditions based on signals from each ECU,
each switch, the steering angle sensor, the wheel
speed sensor, and the yaw rate sensor. The system
controls the electronic current passing through the
linear solenoid of the electromagnetic coupling, and
performs electronic control to distribute the optimum
torque to the rear wheels.
(b) Main components and their functions.
C128585E01
Component Function
4WD Indicator Light Displays warning to driver when system malfunctions
Stop Light Switch Detects brake operation
Throttle Position Sensor Detects opening angle of throttle
Park/Neutral Position Switch Detects "P" position
Steering Angle Sensor Detects turning of steering wheel
4WD Linear Solenoid Detects electronic control limiting clutch operation using signals from
4WD control ECU
Skid Control ECU with Actuator Detects signals from each sensor and outputs them to 4WD control
ECU
4WD Control ECU Detects signals from each sensor via skid control ECU to operate
linear solenoid and control system
Crankshaft Position Sensor Detects engine rpm and inputs it into ECM
Yaw Rate Sensor Detects forward and rearward acceleration of vehicle, and inputs it into
skid control ECU

GF1A TRANSFER – ACTIVE TORQUE CONTROL 4WD SYSTEMTF–15
TF
PROBLEM SYMPTOMS TABLE
HINT:
• Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "Suspected area"
column of the table. Check each symptom by checking the
suspected areas in the order they are listed. Replace parts
as necessary.
• Inspect the fuses and relays related to this system before
inspecting the suspected areas below.
Active torque control 4WD system
HINT:
*:When driving 4WD mode, the vehicle is hard to turn, as if
the brakes were applied, due to the rotational difference
between the front and rear tires while turning.
Symptom Suspected area See page
Phenomenon of tight-corner braking*1.Steering angle sensor circuitTF-27
2.Linear solenoid circuitTF-30
3.4WD control ECU
4WD indicator light remains ON 4WD indicator light circuitTF-36
4WD indicator light does not come ON 4WD indicator light circuitTF-40
The system is in the DTC output mode although
terminals TC and CG of the DLC3 are not short
circuited1.TC and CG terminal circuitTF-42
2.4WD indicator light circuit
The system is not in the DTC output mode although
terminals TC and CG of the DLC3 are not short
circuited1.TC and CG terminal circuitTF-42
2.4WD indicator light circuit

TF–20GF1A TRANSFER – ACTIVE TORQUE CONTROL 4WD SYSTEM
TF
FAIL-SAFE CHART
1. FAIL-SAFE FUNCTION
• If following malfunctions occur, the 4WD control ECU
will stop the function of 4WD control system or partly
change the function to control the system.
• If a malfunction occurs in the sensor signal or
actuator, the flow of electricity to the linear solenoid of
the electrical coupling is prohibited. As a result, the
system enters front wheel drive condition.
• When a component of the system malfunctions and
the fail-safe function activates, the component
operation is prohibited. However, if the system is
controlling the component and the fail-safe function
activates, the system operation is gradually stopped
to prevent sudden changes in the vehicle condition.
• When system control is not possible, the warning light
is illuminated to stop operation of the system
operation.

GF1A TRANSFER – ACTIVE TORQUE CONTROL 4WD SYSTEMTF–21
TF
DATA LIST / ACTIVE TEST
1. READ DATA LIST
HINT:
Using the intelligent tester's (with CAN VIM) DATA LIST
allows switch, sensor and other item values to be read
without removing any parts. Reading the DATA LIST
early in troubleshooting is one way to save time.
(a) Connect the intelligent tester (with CAN VIM) to the
DLC3.
(b) Turn the ignition switch ON.
(c) Read the DATA LIST according to the display on the
tester.
4WD control ECU
Item Measurement Item/Range
(Display)Normal Condition Diagnostic Note
4WD WARN LAMP 4WD indicator light /OFF or ON OFF: 4WD indicator light OFF
ON: 4WD indicator light ON-
SLIP INDI LAMP Slip indicator light /OFF or ON OFF: SLIP indicator light OFF
ON: SLIP indicator light ON-
STOP LAMP SW Stop light switch /OFF or ON OFF: Brake pedal released
ON: Brake pedal depressed-
STEERING ANGLE Steering angle value /
Min.: -3276.8 deg
Max.: 3276.7 degMin.: -3276.8 deg
Max.: 3276.7 deg-
FR WHEEL SPD FR wheel speed /
Min.: 0 km/h (0 mph)
Reading : Max.: 326.4 km/h
(202.8 mph)Actual wheel speed Almost no difference from the
speedometer
FL WHEEL SPD FL wheel speed /
Min.: 0 km/h (0 mph)
Reading : Max.: 326.4 km/h
(202.8 mph)Actual wheel speed Almost no difference from the
speedometer
RR WHEEL SPD RR wheel speed /
Min.: 0 km/h (0 mph)
Reading : Max.: 326.4 km/h
(202.8 mph)Actual wheel speed Almost no difference from the
speedometer
RLWHEEL SPD RL wheel speed /
Min.: 0 km/h (0 mph)
Reading : Max.: 326.4 km/h
(202.8 mph)Actual wheel speed Almost no difference from the
speedometer
AMBI TEMP Ambient temperature /
Min.: -128
C (198.4 F)
Max.: 127 C (260.6 F)Min.: -128 (198.4
F)
Max.: 127 (260.6
F)-
COOLANT TEMP Engine coolant temperature /
Min.: 0
C (32 F)
Max.: 127.5
C (261.5 F)Min.: 0
C (32 F)
Max.: 127.5 C (261.5 F)-
LOCK SW 4WD lock switch / OFF or ON OFF: 4WD lock switch off
ON: 4WD lock switch on-
SLC CUR SLC solenoid (4WD linear
solenoid) current /
Min.: 0 A
Max.: 3 AMin.: 0 A
Max.: 3 A-

GF1A TRANSFER – ACTIVE TORQUE CONTROL 4WD SYSTEMTF–23
TF
DIAGNOSTIC TROUBLE CODE CHART
DTC No. Detection Item Trouble Area See page
C1241/94 Low Power Supply Voltage -Battery
-generator
-ECU-IG1
-Wire harness
-4WD control ECUTF-21
C1280/82 Engine Circuit Malfunction -Throttle position sensor
-Throttle position sensor wire
harness and connector
-CAN communication systemTF-24
C1296/96 ABS Malfunction -Wire harness
-4WD control ECU
-Skid control ECU
-Speed sensor
-Yaw rate sensor
-CAN communication systemTF-25
C1297/97 Steering Angle Sensor -Steering angle sensor
-CAN communication system
-Wire harness
-4WD control ECUTF-27
C1298/98 Linear Solenoid Circuit -Wire harness
-Electromagnetic coupling
-4WD control ECUTF-30
C1299/99 Cancellation of 4WD Control -Tire size
-Electromagnetic coupling
-4WD control ECUTF-32
U0073/86 Control Module Communication
Bus OFF-Wire harness (CANH, CANL
circuit)
-4WD control ECUTF-34
U0100/85 Lost Communication with ECM /
PCM "A"-Wire harness (CANH, CANL
circuit)
-4WD control ECU
-ECMTF-34
U0126/84 Lost Communication with
Steering Angle Sensor Module-Wire harness (CANH, CANL
circuit)
-4WD control ECU
-Steering angle sensorTF-34
U0129/83 Lost Communication with Brake
System Control Module-Wire harness (CANH, CANL
circuit)
-4WD control ECU
-Skid control ECUTF-34